11103221120 has 64 divisors (see below), whose sum is σ = 26585904240. Its totient is φ = 4434216960.

The previous prime is 11103221081. The next prime is 11103221131. The reversal of 11103221120 is 2112230111.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×11103221120² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11103221095 and 11103221104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398030 + ... + 425010.

Almost surely, 2^11103221120 is an apocalyptic number.

11103221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11103221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13292952120).

11103221120 is an abundant number, since it is smaller than the sum of its proper divisors (15482683120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11103221120 is an equidigital number, since it uses as much as digits as its factorization.

11103221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27643 (or 27631 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11103221120 its reverse (2112230111), we get a palindrome (13215451231).

The spelling of 11103221120 in words is "eleven billion, one hundred three million, two hundred twenty-one thousand, one hundred twenty".